JPS6253375U

JPS6253375U -

Info

Publication number: JPS6253375U
Application number: JP14600485U
Authority: JP
Priority date: 1985-09-25
Filing date: 1985-09-25
Publication date: 1987-04-02
Also published as: JPH0345192Y2

Description

[Brief explanation of the drawing]

第１図は本考案一実施例の要部分解斜視図、第
２図ａは同上の要部正面図、第２図ｂは同上の要
部断面図、第３図は同上の動作説明図、第４図は
本考案に係る反射型光電スイツチの基本例の要部
概略構成図、第５図は同上のブロツク回路図、第
６図および第７図は同上の動作説明図、第８図は
従来例の概略構成図、第９図ａは同上の要部正面
図、第９図ｂは同上の要部断面図、第１０図乃至
第１２図は同上の動作説明図である。１は投光手段、２は受光用光学系、４は位置検
出手段、５は判別制御手段、６は出力回路、７，
８ａ，８ｂは光フアイバー、９はアパーチヤ、１
２は投光用発光素子、１３は投光用光学系である
。 FIG. 1 is an exploded perspective view of a main part of an embodiment of the present invention, FIG. 2a is a front view of the main part of the same, FIG. Fig. 4 is a schematic diagram of the essential parts of a basic example of a reflective photoelectric switch according to the present invention, Fig. 5 is a block circuit diagram of the same as the above, Figs. A schematic configuration diagram of the conventional example, FIG. 9a is a front view of the main part of the same, FIG. 9b is a sectional view of the main part of the same, and FIGS. 10 to 12 are operation explanatory diagrams of the same. 1 is a light projecting means, 2 is a light receiving optical system, 4 is a position detection means, 5 is a discrimination control means, 6 is an output circuit, 7,
8a and 8b are optical fibers, 9 is an aperture, 1
2 is a light emitting element for projecting light, and 13 is an optical system for projecting light.

Claims

[Scope of utility model registration request]

A light projecting means that emits a light beam from a light emitting element and forms it into a light beam using a light projecting optical system and projects it onto a detection area; It corresponds to the position of the light receiving optical system that collects the reflected light of the light beam and the light focusing spot that is placed on the light collecting surface of the light receiving optical system and moves within the light collecting surface according to the distance to the detected object. and a determination control means that determines whether or not a detected object exists within a predetermined detection area based on the output of the position detection means and controls an output circuit. In a reflective photoelectric switch in which an optical block consisting of a light-producing optical system and a light-receiving optical system is optically connected to a circuit block including a light emitting element for projecting light and a position detecting means using an optical fiber, one end surface is A light emitting optical fiber is optically coupled to a light emitting element for light emitting, and the other end surface is arranged at the light source position of the light emitting optical system. A reflective photoelectric switch characterized by having an aperture on the end face for controlling the diameter of the light source to limit the range of light output.